Magnetic properties of ultra-thin MBE-grown multilayers

초록

Recently we have combined measurements of the magneto-optic Kerr effect with Brillouin light scattering (BLS) to compare the magnetic properties of MBE-grown Au/Co/Au films on 4o-miscut Si(111) with those of films grown on non-miscut Si(111). In both types of samples the Kerr measurements indicate strong PMA. However, the spin wave frequencies determined by BLS for the samples on 4o-miscut wafers exhibit anomalous behavior. We will discuss such BLS measurements on a variety of ultra-thin MBE-grown layered samples, showing the relationship of the magnetic properties to the evolving structure of the films.